Define relegation before estimating it
| Contract question | Evidence to retain |
|---|---|
| How many direct places? | Current competition regulation |
| Is there a play-off? | Format, participants, and outcome rule |
| Do deductions count? | Operator settlement and final table authority |
| Does administrative relegation count? | Explicit product wording |
| What if the season is incomplete? | Abandonment or curtailment rule |
| What if a team withdraws? | Participant and replacement rule |
Betfair's current football rules provide one operator example with specific relegation settlement conditions. The official competition regulation remains a separate dated source.
Preserve the governing rule edition
FIFA's legal-document portal illustrates official publication and archiving of football regulations. Domestic leagues and competition organisers publish their own relevant rules. Store the document edition and effective date used at the forecast cutoff.
Do not assume a live table already reflects every appeal, deduction, postponed match, or tie-break decision. Record provisional and final states separately.
Complete-field probability
Suppose an illustrative four-team relegation field is exhaustive and assigns probabilities 0.35, 0.30, 0.22, and 0.13 to one mutually exclusive relegation place:
Probability total = 0.35 + 0.30 + 0.22 + 0.13 = 1
Real competitions can relegate more than one team, so team relegation events are then not mutually exclusive. Summing each team's individual relegation probability does not have to equal one; it should align with the expected number of relegation places under the model and rules.
Model the path, not a mood
Record current points, matches remaining, schedule, goal difference and tie-break fields, team-strength uncertainty, lineup information available at the cutoff, and rule scenarios. Simulate or enumerate the final table under the official competition logic.
Do not treat labels such as fighting, desperate, safe, or under pressure as probability inputs until they are represented by timestamped data and tested on later seasons. The statistical models overview covers validation design.
Price example
At illustrative relegation probability 0.30 and decimal odds 3.60 for one unit:
Win profit = 3.60 - 1 = 2.60
Loss probability = 1 - 0.30 = 0.70
EV = (0.30 * 2.60) - (0.70 * 1) = 0.08
If a points appeal changes the probability to 0.24 before execution, the same price gives:
EV = (0.24 * 2.60) - (0.76 * 1) = -0.136
OpenStax's expected-value chapter provides the weighted-payoff method, not the football probability.
Maintenance checklist
- Archive competition and operator rules by date.
- Record direct, play-off, administrative, and incomplete-season outcomes.
- Recompute after deductions, appeals, withdrawals, or format changes.
- Keep all team probabilities and the complete table simulation.
- Set an expiry date for current forecasts.
- Publish no current team selection without maintained first-party inputs.
Continue learning
- Next guide: Team Goals Betting
- Related guide: Time of First Goal Betting
Assumptions and limitations
The field and probabilities are illustrative. DraftKings' soccer rules and Betfair are operator examples. This page explains methodology and settlement; it does not identify a current relegation candidate.
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